Today only. Logitech has the Logitech Anywhere Mouse MX Wireless Laser Mouse for $60 - $20 off with coupon code logi_ws_72211
[500 uses] = $40
with free shipping. Features the Logitech Darkfield Laser Tracking technology which claims to work on glass and uneven surfaces. Includes Logitech Unifying receiver, 2 AA batteries, and carrying pouch.